knowling



G. KNOWLING, .ln.

oamoummne' mm.

APPLICATION FILED FEB. 26,1918.

'1 313,824. muted Aug. 19, 1919.

2 SHEETS-SHEET I- WITNESSES l mus/won BY W Y nnomsrs G. KNGWLING, 3a.

. nsmounmu am.

APPLICATION FILED FEB. 26. IQIB- 1,313,824. Patented Aug. 19, 1919.

2 SHEETS-SHEET 2- I TTORNEYS GEORGE KNOWLING, JR, OF ST. JOHN, NEWL' OUNDLANU.

DEMOUNTAIBLE RIM.

Speciflcation of Letters Patent.

Patented Aug. 19, 1919.

Application filed February 26, 1818. Serial No. 219,230.

To all whom it may .mcern:

Be it known thx; I, (iimnon KNowuNo, J12, a citizen of Nm-vfoundland, and a reel dent of St. John, Newfoundland, have invented a new and Improved Demountnblo. Rim, of which the following is' a full, clear, and exact description.

My invention relates to demountoble rims, and. has reference more particularly to means for locking the rim on the wheel body.

. An object of the invention is to provide o. si mic and convenient derhountable rim whicrcan be easily and quickly removed from the wheel body;

Another object of the invention is .to provide a demountable rim which is equipped with looking Wedges normally retained in position jby yielding means and wh ch wedges prevent an axial movement of the demouotable rim on the wheel body,

With the above and other objectsin view, the nature of which will more fully appear as the description proceeds, the invention consists in the novel construetion, combinati'on and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings, forming part of the application, similar characters of reference Indicate corresponding parts in all the views.

Figure 1 is an elevation of a wheel provided with a de no'untable rim emboying my invention;

Fig. 2 is a cross section on line 22, Fig. 1 r Fig. z- 1 Fig. 4 is a cross'scction on line 4*4, Fig. 1;

Fig. 5

'3 is a. similar section on line 3-3,

is a vertical section on line 55,

Fig. 2

- Fig. 6 is :1. section on line 66, Fig. 2;

Fig. 7 is a fragmentary top plan view on the fixed rim when the demountoblc rim is removed; and

Fig. 8 is a, fragmentary inside view on the Wedge provided on the emountable rim.

Referring to the drawings, 9 is a. fixed rim which has a rising flange 10, preferably flush with the rear face of the fixed rim. The mid rim has also lugs 11 on the periphery which extend from the flange through a portionof the fixed rims width. A ring 12 is mounted to revolve onthe fixed rim between the 1113i 11 and a flenge 18 secured to the front face of the said rim. rlphcry formed by the flanges and the lugs oftho fixed rim is tnpm'iug, the larger do .ometcr being at the rear face, to properly fit the tapering; inner surface of the do mountable rim H. The suid rim has on the inner periphery tapering keys 15 whirl: are disposed symmetrically with the lugs 11 and for which the lugs and flanges are provided with tapering grooves 16, the widest end of the grooves and keys-being at the front feces of the fixed and,demountable rims ro spectively.

The ring 12 has wedge sections 17 in proximity of each log 11 and for which wedge each key 15 has a. corresponding wedgeshnped slot 18 adopted lo be engaged by the \Vt-Nlfle and thereby draw the removable rim tightly on to the fixed rim over the entire periphery. The engagement of the wedges i7with the keys 15 is nmiutoined by springs 19 whivh are preferably mounted on rods 20 extending between the lugs 11. The ring 12 has lateral extensions 21 adopted to be disposed between the lugs 11. and to engage the correspomlion rod 20, so that one end of a. colmspomlillg spring'is engaged with said lateral extension 21 and the other zigoinstn loo H. The tendency of the springs is to more the ring to bring the wedges across the gromos l6 and. thereby into engagement with the keys 15.

To disengage tho-removable rim from the fixed rim it is nomssory to disengage the wedge soctiom: 17 of the ringfrom the keys 15, and for that purpose the l'illf! isprovidod. with a. lateral lug 2E3 projecting through a slot -23 in the flange 13. 'By moving said lug against the resistance of the springs if) the wedges may be disengaged from lho keys. To retain lho ring in position when the wedges are disengaged from the keys, n

springqu'tuntmi lutch 24 is provided which is :ulnptedto snap into a recess or uotchQi'i provided in the removable rim when said recess a lines with the latch. The latch has a pin 26 which projects through a. flange 13 and whereby said? latch may be disengaged from the ring and the same subjected to the action of the springs 19.

To facilitate the displacement of the ring. the log 22 nmy he provided with means 27 which are 01K, engaged by a key or wrench adopted to be fulcmmed in a suitable portion 28 of the fixed rim 9.

The fixed rim 9 has a. suitoble log; 29 hav- The poin; a radiating aperture for admitting the air valve of the pneumatic tube carried by the rim 1%. which has also an aperture for the valve adapted to aline with the aperture in the lug 29 when the removable rim is mounted on the fixed rim.

it will be noted that when thering has been rotated to bring the notch 25 into alinemeut with the latch 24 the latch will imumdiatel engage the, ring to prevent the return of said ring to its original position under the action of the springs 19 until the latch is disengaged from the ring by pressing the pin it). 'It will therefore be seen that the demouutablc rim can be easily and quickly removed from the fixed rim and another detachable rim substituted therefor.

1 claim: 1

I. In eomliinatimi with a wheel body providcd on its periphery with hugs having tapering grooves, taperifig key on the inner face for engaging the gnawed lugs 01 the body wl|ereb a ,relatl've rotary movement between the body and the rim is prevented but said rim is free to move axially on said body, a ring revolubly mounted in said body, wedge section's associated with said ring, said keys having intermediate their ends transverse \vedgeshaped slots adapted to be engaged by said wedge sections, whereby the axial displacement of the rim on the body is prevented, yielding means in said body engaging the ring and normally tending to move the wedge sections of same into engagement, withthe keys, and means whereby said ring may be operated from the outer face of the. body to move said ring against the resistance of the yielding means and disengage said wedge sections of the ring from the keys.

In combination with a wheel body having a tapering periphery the diameter of which is smaller at; the outer face, a detaelr able, rim having an inner taperin periphery adapted to fit. snugly on to file body, keys on the. tapering periphery of the rim having a taper decreasing in width toward the rear fare of the rim, said body having tapering grooves adapted toreeeive the'keys and whereby the rim has only an axial movement relative to said body, a ring rev- .olubly mounted in the body, wedqe scrtious on said ring. said keys having wedgeshapcd when the wedge sections are nioved out of engagement with the keys and retain said ring in that position against the resistaii'c e of the springs whel 'ebv thqwrimmay bqd i's engaged from the body, r t

3. In a wheel, a wheel bod'iy having side flanges and lugs on its periphery, the flanges and lugs being provided with grooves, a detachable rirnhaving slot-ted keys fittin in said grooves, a ring revolubly mountec in the body and. provided with wedge shaped members adapted for engaging the slots of the keys and with aperturet'l lateral extensions, rods mounted between the lugs of the body and passing through the extensions of the ring, springs on the rods between the extensions and lugs, means for operating the ring from one face of the body, means for locking the ring against the action of the springs.

, 4. In a wheel, a wheel body harin side flanges and lugs on its periphery, the anges and lugs being provided with grooves and one of the thin es with a slot, a detachable rim having otted lugs fitting in said rooves, a ringrevolubly mounted in the ody between the lugs and one flange and provided with wedge shaped members engaging the slots of the keys, apertured lateral extensions, and a lateral lug projecting through the slotof the body, rods mounted in the body between the lugs thereof and passing through theapertnres of the exten- GEORGETK'NOWLING, JR. 

